ScientificAmerican1891-02-28.jpg ThumbnailsScientific American 1891-03-14ThumbnailsScientific American 1891-03-14ThumbnailsScientific American 1891-03-14ThumbnailsScientific American 1891-03-14ThumbnailsScientific American 1891-03-14
Manufacture of heavy guns for United States Navy. Works at Bethlehem. Hydraulic gun forging; casting. Fourteen six inch guns.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner